This tool is used to hold both camshafts in T.D.C. position. Applicable to VW and Audi V6, 2.8 and 2.7L engines with 5 valves per cylinder. For the 3.0 V6 used in Audi models see T 40030 ? Used for Camshaft Alignment ? Applicable to VW and Audi ? Made in the U.S.A.